Comfort Glow CGN20TB, CGN30TLB, CGN30TB, CGN20TLB User Manual

®

BLUE FLAME VENT-FREE NATURAL GAS HEATER

OWNER'S OPERATION AND INSTALLATION MANUAL

i

CGN20TB

CGN20TLB

CGN30TB

CGN30TLB

Heater Sizes: 20,000 Btu/Hr Thermostat and

30,000 Btu/Hr Thermostat Model Heaters

i

/

/

WARNING: If the information in this manual is not I
followed exactly, a fire or explosion may result

causing property damage, personal injury, or loss

Lof ife.
m Do not store or use gasoline or other flammable

vapors and liquids in the vicinity of this or any

other appliance.

m WHAT TO DO IF YOU SMELL GAS

• Do not try to light any appliance.

• Do not touch any electrical switch; do not use any

phone in your building.

• Immediately call your gas supplier from a
neighbor's phone. Follow the gas supplier's

instructions.

• If you cannot reach your gas supplier, call the fire
department.

Installation and service must be performed by a

qualified installer, service agency, or the gas supplier.

This appliance may be installed in an aftermarket* manufactured (mobile) home, where not prohibited
by state or local codes.

* Aftermarket: Completion of sale, notforpurposeofresale,fromthe manufacturer

This appliance is only for use with the type of gas indicated on the rating plate. This appliance is not
convertible for use with other gases.

WARNING: Improper instal-
lation, adjustment, alter-
ation, service, or mainte-
nance can cause injury or

]

property damage. Refer to
this manual for correct in-

stallation and operational
procedures. For assistance

or additional information
consult a qualified installer,

service agency, or the gas
supplier.

WARNING: This is an
unvented gas-fired heater.

It uses air (oxygen) from the
room in which it is installed.

Provisions for adequate
combustion must be pro-
vided. Refer to page 4 of this

manual.

BLUE FLAME NATURAL GAS HEATER

I,

SAFETY

INFORMATION

A WARNINGS

IMPORTANT: Read this owner's
manual carefully and completely

before trying to assemble, oper-
ate, or service thls heater. Im-
proper use of this heater can
cause serlous Injuryor death from

bums, fire, explosion, elec_rlcal
shock, and carbon monoxlde

polsonlng.

_lb DANGER: Carbon monoxidepoisoning may lead to death!

Carbon Monoxide Poisoning: Early
signsof carbon monoxide poisoning m-

=semblethe flu, with headaches,dizziness,

ornausea. If you have these signs, theheater
may not be working properly. Get fresh air

at once! Have beater serviced. Some people
aremore affected by carbonmonoxide than

others. These include pregnant women,

people with heart or lung disease oranemia,

those under the influence of alcohol, and
those at high altitudes.

Natural Gas: Natural gas is odorless. An
odor-making agent is added to naturalgas.
The odor helps you detect a naturalgasleak.
However, the odor added to natural gascan
fade.Naturalgasmay bepresenteventhough

no odor exists.

Make certain you read and understand all

Warnings. Keep this manual for reference.
It is your guide to safe and proper operation

of this heater.

heater or its controls can be dan-

_WARNING: Any change tothis

gerous.

This appliance is only for use with the 10.

typeof gasindicated onthe ratingplate.
This applianceis notconvertible for use
with other gases.

2.

If you smell gas

• shut off gas supply

• do not try to light any appliance 11.

• do not touch any alectrical switch; do
not use any phone in your building

• immediately call your gas supplier 12.

from aneighbor's phone.Follow the
gas supplier's instructions 13.

• if you cannotreachyour gas supplier,
call the fu'e department

This heater shall not be installed in

.

a bedroom or bathroom.

4.

Never install the heater

• in a recreational vehicle

• where curtains, furniture, clothing, or
other flammable objects are less than

36 inches from the front, top, or sides

of the heater

• as a fireplace insert

• in high traffic areas

• in windy or drafty areas

5,

This heater needs fresh, outside air
ventilation to run properly. This heater

has an oxygen depletion sensor (ODS)
pilot light safety system. The ODS shuts
down the heater if not enough fresh air
is available. See Fresh Air for Combus-
tion and Ventilatio_ pages 4 through 6.

6.

Keep air openings in front and bottom
of heater clear and free of debris. This

will ensure enough air for proper com-
bustion.

7. If heater shuts off, do not relight until
you provide fresh, outside air. If heater
keeps shutting off, have it serviced.

8. Do not run beater

• where flammable liquids or vapors
are used or stored

• under dusty conditions

9. Never place any objects on the heater.

Surface of heater becomes very hot

when running heater. Keep children and
adults away from hot surface to avoid
burns or clothing ignition. Heater will

remain hot for a time after shut-down.
Allow surface to cool before touching.

Carefully supervise young children
when they are in the same room with

heater.

Make sure grill guard is in place be-
fore running heater.

Do not use heater if any part has been
under water. Immediately call a quali-

fied service technician to inspect the
room heater and to replace any part of
the control system and any gas control

which has been under water.

14.

Turn off and unplug heater and let cool
before servicing. Only a qualified ser-
vice person should service and repair

heater.

15.

Operating heater above elevations of
4,500 feet could cause pilot outage.

2 1o4&_ 7

OWNER'S MANUAL

PRODUCT
IDENTIFICATION

Panel

IgnitorButton

ControlKnob

Guard

Glass

Panel

Cabinet

PRODUCT
FEATURES

Safety Device

This heater has a pilot with an Oxygen
Depletion Sensor Shutoff System (ODS).

The OI)S/pilot is arequiredfeaturefarvent-
free room heaters. The ODS/pilot shuts off
the heaterif there is not enough freshair.

Plezo Ignition System

This heaterhas a piezo igniWr.This system

requires no nlatehes, batteries, or other

sources to light heater.

Thermostatic Heat Control
Thermostatmodelshaveathermostatsens-

ingbulb and a control valve. This results in

the greatest heater comfort. This can also
resultin lower gas bills.

Figure 1 - Vent-Free Natural Gas Heater (30,000 Btu/Hr Model Shown)

LOCAL CODES

Install and use heater with care. Follow all 1.
local codes. In the absence of loeal codes, use 2.

the latest edition of the National Fuel Gas

CodeANSIZ223.1,aisoknownasNFPA54*. 3.

*Available from:
American National Standards Institute, Inc.

1430 Broadway

New York, NY 10018

National Fire Protection Association, Inc.

Batterymareh Park

Quincy, MA 02269

UNPACKING

Remove heater from carton.
Remove all protective packaging ap-

pliedto heater for shipment.
Check heater for any shipping damage.

If heater is damaged, promptly inform
dealer where you bought heater.

104331 3

BLUE FLAME NATURAL GAS HEATER

FRESH AIR FOR

COMBUSTION AND
VENTILATION

_ WARNING: This heater shall

not be installed in a Confined

space unless provisions are pro-
vided for adequate combustion
and ventilation air. Read the fol-

lowing instructions to Insure

proper fresh air for this and other
fuel-burning appliances In your

home.

Today's homes are built more energy effi-
cient than ever. New materials, increased

insulation, and new construction methods
help reduce beat loss in homes. Home owners

weather strip and caulk around windows and
doors tokeep the cold air out and the warm air
in. During heating months, home owners
want their homes as airtight as possible.

While it is good to make your home energy
efficient, your home needs to breathe. Fresh
air must enter your home. All fuel-burning
appliances need fresh air for proper com-

bustion and ventilation.
Exhaust fans, fireplaces, clothes dryers, and

fuel burning appliances draw air from the
house to operate. You must provide ad-
equate fresh air for these appliances. This
will insure proper venting of vented fuel-
burning appliances.

PROVIDING ADEQUATE
VENTILATION

The following is exerpts from National Fuel

Gas Code. NFPA 54/ANSI Z223.1, Section

5.3, Air for Combustion and Ventilation.
All spaces in homes fallinto one of the three

following ventilation classifications:

1. Unusually Tight Contruction

2. Unconfined Space

3. Confined Space
The information on pages 4 through 6 will

help you classify your space and provide
adequate ventilation.

Unusually Tlght Construction

The air that leaks around doors and win-
dows may provide enough fresh air for

combustion and ventilation. However. in
buildings of unusually tight construction.

you must provide additional fresh air.

Unusually tight construction is de-

fined as construction where:
a. walls and ceilings exposed to the

outside atmosphere have a con-
tinuous water vapor retarder with
a rating of one perm (6 x 10"11kg
per pe.seo.n_) or less with open-

ings gasketed or sealedand

b. weather stripping has been

added on openable windows and
doors and

c. caulking or sealants are applied

to areas such as joints around
window and door frames, be-

twsen sole plates and floors, be-
tween wall-ceiling joints, be-

tween wall panels, at penetra-
tions for plumbing, electrical, and

gas lines, and at other openings.

If your home meets all of the three
criteria above, you must provide ad-

ditional fresh air. See Ventilation Air

From Outdoors, page 6.
If your home does not meet all of the

three criteria above, proceed to De-

termining Fresh-Air Flow For Heater
Location, page 5.

Confined and Unconfined Sp_e

TheNationalFuelGasC-ode(ANSIZ223.1,

1992 Section 5.3) defines a confined space

as a space whose volume is less than 50
cubic feet per 1,000 Btu per hour (4.8 m3per

kw) of the aggregate input rating of all
appliances installed in that space and an
unconfined space as a space whose volume
is not less than 50 cubic feel per 1,000 Btu
per hour (4.8 m3per kw) of the aggregate
input rating of all appliances installed inthat
space. Rooms communicating directly with
the space in which the appliances are in-
stalled*, through opemngs not furnished
with doors, are considered a part of the
unconfined space.

This heater shall not be installed in a con-
fined space or unusually tight construction

unless provisions are provided for adequate
combustion and ventilation air.

*Adjoining rooms are communicating only

ifthere aredoorless passageways orventila-

tion _511Sbetween them.

4 Io433!

OWNER'S MANUAL

FRESH AIR FOR

COMBUSTION AND
VENTILATION

Continued

DETERMINING FRESH-AIR FLOW FOR HEATER LOCATION

Determining if You Have a Confined or Unconfined Space

Use this worksbeet to determine if you have a confined orunconfined space.
S pace: Includes theroom inwhich you will installheater plus any adjoining rooms with doorless passageways or ventilation grilIsbetween

the rooms.

1. Determine the volume of the space ('lengthx width x height).
l..¢ngth x Width x Height = eu. ft. (volume of space)

Example: Space size 20 ft. (length) x 16 ft. (width) x 8 ft. (ceiling height) = 2560 eu. ft. (volt_ee of space)

If additional ventilation to adjoining room is supplied with grills or openings, add the vohmm of these rooms to the total volume of
the space.

2. Divide the space volume by 50 cubic feet to determine the maximum Btu/Hrthe space can support.
(volume of space) + 50 cu. ft. = (Maximum Btu/Hr the space can support)

Example: 2560 cu. ft. (volume of space) + 50 cu. ft. = 51.2 or 51,200 (maximum Btu/Hrthe spac_ can support)

3. Add the Btu/Hr of all fuel burning appliances in the space.

Vent-free heater Btu/Hr

Gas water heater* Btu/Hr Example:
Gas furnace Btu/Hr Gas water heater 40,000 Btu/Hr
Vented gas heater Btu/Hr Vent-free heater + 20,000 Btu/Hr
Gas fireplace logs Btu/l-Ir Total = 60,000 Btu/I-lr

Other gas appliances* + Btu/Hr
Total = Btu/Hr

* Do not include direct-vent gas appliances. Direct-vent draws combustion air from the outdoors and vents to the outdoors.

4. Compare the maximum Btu/Hr the space can support with the actual amount of Btu/Hr used.
Btu/Hr (maximum the space can support)

Btu/l-Ir (actual amount of Btu/Hr used)

Example: 51,200 Btu/Hr (maximum the space can support)

60,000 Btu/Hr (actual amount of Btu/Hr used)

The space in the above example is a confined space because the actual Btu/Hr used is more than the maximum Btu/Hr the space can support.
You must provide additional fresh air. Your options are as follows:

A. Rework worksheet, adding the space of an adjoining room. If the extra space provides an unconfined space, remove door to adjoin-

ing room or add ventilation grills between rooms. See Ventilation Air From Inside Building, page 6.

B. Vent room directly to the outdoors. See Ventilation Air From Outdoors, page 6.
C. Install a lower Btu/Hr heater, if lower Btu/Hr size makes room unconfined.

If the actual Btu/Hr used is less than the maximum Btu/I-Irthe space can support, the space is an unconfined space. You will need no
additional fresh air ventilation.

WARNING: Ifthe area in which the heater may be operated is smaller than that defined as an unconfined space,

provide adequate combustion and ventilation air by one of the methods described inthe National FuelGas Code,
ANSI Z223.1, 1992, Section 5.3 or applicable local codes.

Continued

I04_I 5

BLUE FLAME NATURAL GAS HEATER

FRESH AIR FOR

COMBUSTION AND
VENTILATION

Continued

VENTILATION AIR

Ventilation Air From Inside
Building

This freshairwould come from anadjoining
unconfined space. When ventilating to an

adjoining unconfined space, you must pro-
vide two permanent openings: one within

12"of the ceiling and one within 12"of the

floor on the wall connecting the two spaces
(see options 1and 2, Figure2). You can also

remove door into adjoining room (see op-
tion 3, Figure 2). Follow the National Fuel

Gas Code NFPA 54/ANSI Z223.1, Section

5.3, Air for Combastion and Ventilation for

required size of ventilation grills orducts.

Vent,atlon

Gdlls

intoAdjoining

Room,

Option

Ventilation Gdlls

Into/_olnlng Room,:

Option 2

,_ WARNING: Rework work-
sheet, adding the space of the

adjoining unconfined space. The
combined spaces must have
enough fresh air to supply all

appliances in both spaces.

Ventilation Air From Outdoors

Provide extra fresh air by using ventilation
grills or ducts. You must provide two per-

manent openings: one within 12" of the
ceiling and one within 12" of the floor.
Connect these items directly to the outdoors

or spaces open to the outdoors. These spaces
include attics and crawl spaces.

IMPORTANT: Do not provideopenings for

inlet or outlet air into attic if attic has a
thermostat-controUed power vent. Heated air
entering the attic will activate the power vent.

Figure 2 - Ventilation Air from Inside Building

Outlet

Air

Inlel

Air

Inlet Air

Figure 3 - Ventilation Air from Outdoors

To Attic

............... To

tHI6H....P

_] Crawl

IIIIIIIIIIIIIIII

Space

Ventilated

Crawl Space

6 104331

OWNER'S MANUAL

INSTALLATION

NOTICE: This heater is intended
for use as supplemental heat. Use

this heater along with your pri-
mary heating system. Do not in-
stall this heater as your primary
heat source. If you have a central
heating system, you may run
system's circulating blowerwhne
using heater. This will help circu-
late the heat throughout the
house. In the event of a power
outage, you can use this heater

as your primary heat source.

NOTICE: A qualified service per-
son must install heater. Follow

all local codes.

CHECK GAS TYPE

Use only natural gas. If your gas supply is

not natural gas, do not install heater. Call

dealer where you bought heater for proper
type heater.

INSTALLATION ITEMS

Before installing heater, make sure you have
the items listed below.

• piping (check local cedes)

• sealant (resistant to propane/LP gas)

• manual shutoff valve *

• ground joint union

• test gauge connection * (see Figure 13,
page 10)

• sediment trap

• tee joint

• pipe wrench

• test gauge connection*

* An A.G.A. design-certified manual shutoff
valve with 1/8" NPT tap is an acceptable
alternative to test gauge connection. Pur-

chase the optional A.G.A. design-certified
manual shutoff valve from your dealer. See

Accessories, page 18.

LOCATING HEATER

This heater is designed tobe mounted on a
wall.

_k WARNING: Maintain the mini-
mum clearances shown In Figure

4.ffyou can, provide greater clear-
ances from floor, ceiling, and join-
ing wall.

You can locate heateronfloor, away from a
wall. An optional floor mounting stand is
needed. Purchase the floor mounting stand
from your dealer. See Accessories, page 18.

WARNING: Never install the

heater

• in a bedroom or a bathroom

• in a recreational vehicle

• where curtains, furniture,
clothing, or other flammable
objects are less than 36 inches

from the front, top, or sides of
the heater

• as a fireplace insert

• in high traffic areas

• in windy or drafty areas

CAUTION: This heater cre-

ates warm air currents. These
currents move heat to wall sur-

faces next to heater. Installing

heater next to vinyl or cloth wall

coverings or operating heater
where Impurities (such as to-
bacco smoke, aromatic candles,
cleaning fluids, oil or kerosene

lamps, etc.) In the air exist, may

discolor walls.

IMPORTANT: Vent-free heaters addmots-

tare to the air. Although this is beneficial,

installing heater in rooms without enough
ventilationair may causemildew toform from
too much moisture. See Fresh Airfor Com-

bustion and Ventilation, pages 4 through6.

CAUTION: If you Install the

heater in a home garage

• heater pilot and burner must

be at least 18 inches above

floor

• Iocete heater where moving ve-

hicle will not hit it

Forconvenianceandefficiency, install heater

• where there is easy access for operation,

inspection, and service

• in coldest part of room

An optional fan kit is available from your
dealer. See Accessories, page 18. If plan-

ning to use fan, locate heater near an electri-
cal outlet.

Minimum

=" to Top

FLOOa Sudace

of Carpeting or

Other Combustible

Material

Figure4-MountlngClearancesAsViewed
From Frontof Heater

104331 7

Comin_d

BLUE FLAME NATURAL GAS HEATER

INSTALLATION

Continued

THERMOSTAT SENSING

BULB

The thermostat sensing bulb has been
placed inside the heater for protection

during shipping.

Locating Thermostat Sensing

Bulb

1. Remove front panel of heater (see Fig-

ure 7).

2. Locate thermostat sensing bulb just
under burner assembly.

IMPORTANT: Attach thermostat sensing
bulb to back of heater for properoperation.

Attaching Thermostat Sensing
Bulb

1. Remove thermostat sensing bulb from
holders inside heater. Route through

slot opening in bottom of heater.

2. Place clamp on thermostat sensing bulb
as shown in Figure 5. Clamp is pro-

vided in hardware package.

3. Snap clamp into upper mounting hole
as shown in Figure 5. Mounting hole is
located on lower left edge on back of

heater. Make sure the thermostat sens-

is pointing up.

Thermostat

INSTALUNG HEATER TO
WALL

Mounting Bracket

The mounting bracket is located on back
panel of heater. It has been taped there for

shipping. Remove mounting bracket from
back panel.

Figure 6 - Bracket Location

Removing Front Panel Of Heater

1. Remove two screws near bottom cor-
ners of front panel.

2. Lit_straightupon gfiUguard untilitstops.

Grill guard will slideup about 1/4",

3. Pull bottom of front panel forward, then
downward.

4. Remove cardboard packing from grill

and glass.

Attaching to wall stud:This method
provides the strongest hold. Insert mounting

screws through mounting bracket and into
wall studs.

Attaching to wall anchor: Thismethod
allows you to attach mounting bracket to

hollow walls (wall areas between studs) or

to solid walls (concrete or masonry).

Decide which method better suits your needs.
Either method will provide asecure hold for
the mounting brackeL

Marking Screw Locations

1. Tape mounting bracket to wall where
heater will be located. Make sure

mounting bracket is level.

_kWARNING: Maintain minimum
clearances shown in Figure 8. If

you can, provide greater clear-
ancas from floor and joining wall.

2. Mark screw locations on wall (see Fig-

ure 8).

Note: Only mark last hole on each end

of mounting bracket. Insert mounting
screws through these holes only.

3. Remove tape and mounting bracket
from wall.

\ /I

Only Insert MoLmtlng 18 3/4"
Screws Through Last MI_.

Hole On Each End

Figure 5- Attaching Thermostat Sensing
Bulb

Figure 7- Removing Front Panel Of Heater

Methods For Attaching

Mounting Bracket To Wall

Only use last hole on each end of mounting
bracket to attach bracket to wall. These two

holes are 16 inches apart from their centers.
Attach mounting bracket to wall in one of
two ways.

1. Attaching to wall stud

2. Attaching to wall anchor

8 104331

30,000 Btu/Hr Model

Screws Through Last MIn.

20,000 Btu/Hr Models

Figure 8 - Mounting Bracket Clearances

18 3/4"

INSTALLATION

Continued

Attaching Mounting Bracket To
Wail

Note: Wall anchors, mounting screws, and
spacers are in hardwarepackage. The hard-
ware package is provided with heater.

Attaching to wall stud method

Forattachingmounting brackettowall studs.

1. Drill holes at marked locations using
9/64" drill bit.

2.

Placemounting bracket onto wall. Line
uplast hole on each endof bracketwith

holes drilled in wall.

3.

Insertmounting screws throughbracket
and into wall studs.

4.

Tighten screws until mounting bracket

is fli'mly fastened to wall studs.

Attaching to wall anchor method

For attaching mounting bracket to hollow
walls (wall areas between studs) or solid

walls (concrete or masonry).

I. Drill holes at marked locations using

5/16" drill bit. For solid walls (concrete
or masonry), drill at least 1" deep.

2. Fold wall anchor as shown in Figure 9.

3. Insert wall anchor (wings first) into

hole. Tap anchor flush to wall.

4. For thin walls (1/2" or less), insert red
key into wall anchor. Push red key to

"pop" open anchor wings.
IMPORTANT." Do not hammer key!

For thick walls (over 1/2" thick) or solid

walls, do not pop open wings.

5. Place mounting bracket onto wall. Line
up last hole on each end of bracket with

wall anchors.

6. Insert mounting screws through bracket

and into wall anchors.

7. Tighten screws until mounting bracket
is firmly fastened to wall.

OWNER'S :MANUAL

Figure 10 - Popping Open Anchor Wings
For Thin Walls

Placing Heater On Mounting
Bracket

1. Locate two horizontal slots on back
panel of heater.

2. Place heater onto mounting bracket.

Slide horizontal slots onto stand-out

tabs on mounting bracket.

Stand-Out Tab _

Mounting Bracket
(attached to wail)

Figure 11 - Mounting Heater Onto
Mounting Bracket

Installing Bottom Mounting
Screws

1. Locate two bottom mounting holes.
These holes are near bottom on back

panel of heater (see Figure 12).

2. Mark screw locations on wall.

3. Remove heater from mounting bracket.

4. If installing bottom mounting screws
into hollow or solid wall, install wall

anchors. Follow steps 1 through 4 un-
der Attaching To Wall Anchor Method.

If installing bottom mounting screw

into wal! stud, drill holes at marked lo-

cations using 9/64" drill bit.

5. Replace heater onto mounting bracket.

6. Place spacers between bottom mount-

ing holes and wall anchor or drilled hole.

7.

Hold spacer in place with one hand.

With other hand, insert mounting screw

through bottom mounting hole and
spacer. Place tip of screw in opening

of wall anchoror drilled bole.

8.

Tighten both screws until heater is

firmly secured to wall. Do not over

tighten.

Nolo: Donot replace front panel at this

time. Replace front panel after making
gas connections and checking for leaks

(seepages 10and ll). Make gas connec-
tions and check for leaks before replac-
ing frontpanel(see pages 10 and 11).

Figure 12 - Installing Bottom Mounting
Screws

Figure 9 - Folding Anchor

104337 9

BLUE FLAME INATURAL GAS HEATER

INSTALLATION

Continued

CONNECTING TO GAS
SUPPLY

NOTICE: A qualified service per-
son must connect heater to gas

supply. Follow all local codes.

WARNING: Never connect

heater to private (non-utility) gas
wells. This gas is commonly

known as well-head gas.

IMPORTANT: Check gas line pressure

before connecting heater to gas line. Gas
line pressure must be no greater than 14

inches of water. If gasline pressureishigher.
heater regulator damage could occur.

CAUTION: Use only new,

black iron or steel pipe. Inter-
nally-tinned copper tubing may

be used in certain areas. Check
your local codes. Usepipe of large
enough diameter to allow proper

gas volume to heater. If pipe is
too small, undue loss of pres-

sure will occur.

Typical Inlet Pipe Diameters

20,000 Btu/HrModels 3/8" or greater
30,000 Btu/Hr Models 1/2" or greater

Installation must include a manual shutoff
valve, union, and plugged 1/8" NPT tap.

Locate NPT tap within reach for test gauge
hook up. NPT tap must be upstream from
heater (see Figure 13).

Apply pipe joint sealant lightly to male
threads. This will prevent excess sealant

from going in_ pipe. Excess sealant inpipe

could result in clogged heater valves.

_CAUTION: Useplpejoint seal-
ant that Is resistant to liquid pe-
troleum (LP) gas.

Installsediment trapin supplyline asshown
in Figure 13. Locate sediment hap where it

Pressure
Regulator

3/8" NPT

r TeeJoint ,,_'_ \\ L Manual

is within reach for cleaning. Locate b_di-
ment trapwhere trappedmatte_is not likely

to freeze. A sediment trap traps moisture
and contaminants. This keeps them from
going into heater controls. If sediment trap
is not installed or is installed wrong, heater
may not runproperly.

IMPORTANT: Hold pressure regulator
with wrench when connecting it to gas pip-

ing and/orfittings.

/ \ Sh.to.

Test / Reducer _ _ _ Valve *

Gau e _ Bushingto

con ooion 1/8".ST I T ,°lInle,

[ 1/8"NPT/ _ J _/ PipefromGas
L_ PlugTap _ j,,,,,,,.---,_,=r Meter(5"W.C.

_ to 10.5"W.C.

Sediment r. TeeJoint_ Pressure)

Trap _ Pipe Nipple LIa,, imum

L cap _]'_---_----

Heater
Cabinet

Figure 13- Gas Connection

• An A.G.A. design-certified manual shutoff valve with 1/8" NI_ tap is an acceptable
alternative to test gauge connection. Purchase the optional A.G.A. design-certified manual
shuU3ffvalve from your dealer. See Accessories, page 18.

t0 I0433_

OWNER'S MANUAL

INSTALLATION

Continued

CHECKING GAS
CONNECTIONS

WARNING: Test all gas pip-

Ing and connections for leaks

after Installatlon or servicing.
Correct all leaks at once.

_WARNING: Never usean open
flame to check for a leak. Apply a

mlxture of liquid soap and water

to all joints. Bubbles forming
show a leak. Correct all leaks at

once.

Pressure Testing Gas Supply
Piping System

Test Pressures In Excess Of 1/2 PSIG

1,

Disconnect heater and its individual
manual shutoff valve from gas supply

piping system. Pressures in excess of

1/2 psig will damage heater regulator.

2.

Cap off open end of gas pipe where
manual shutoff valve was connected.

3.

Pressurize supply piping system by ei-
ther using compressed air or opening
main gas valve located on or near gas

meter.

4. Check all joints of gas supply piping

system. Apply mixture of liquid soap
and water to gas joints. Bubbles form-

ing show a leak.

5. Correct all leaks at once.

Test Pressures Equal To or Less Than
1/2 PSIG

Close manual shutoff valve (see Fig-
ure 14).

2.

Pressurize supply piping system by ei-
ther using compressed air or opening

main gas valve located on or near gas
meter.

3.

Check all joints from gas meter to
manual shutoff valve (see Figure 15).

Apply mixture of liquid soap and wa-
ter to gas joints. Bubbles forming show

a leak.

4. Correct all leaks at once.

Pressure Testing Heater Gas

Connections

1, Open manual shutoff valve (see Fig-

ure 14).

2. Open main gas valve located on ornear

gas meter.

3. Make sure control knob of heater is in
the OFF position.

4. Check all joints from manual shutoff
valve to thermostat gas valve (see Fig-
ure 15). Apply mixture of liquid soap
and water to gas joints. Bubbles form-
ing show a leak.

5.

Correct all leaks at once.

6.

Light heater (see Operating Heater).
Check the rest of the internal joints for

leaks. B.

7. Turn off heater (see To Turn Off Gas to

Appliance, page 12).

8. Replace front panel.

r_[_-_OP on

Manual J II t

Shutoff //F_ _ \

Valve __?__ ,

_J Closed

Figure 14 - Manual Shutoff Valve

Thermostat Gas Valve

OPERATING

HEATER

I FOR YOUR SAFETY I

low these Instructions exactly, a
fire or explosion may result caus-
Ing property damage, personal
injury or loss of life.

A.

C.

D.

READ BEFORE

LIGHTING

WARNING: If you do not fol-

This appliance has a pilot which must
be lighted by hand When lighting the
pilot, follow these instructions exactly.

BEFORE LIGHTING smell all
around the appliance area for ga_ Be

sure to smell next to the floor because
some gas is heavier than air and will

settle on the floor.

WHAT TO DO IF YOU SMELL
GAS

• Do not try to light any appliance.

• Do not touch any dectric switch; do
not use any phone in your buildinl_

• Immediately call your gas supplier
from a neighbor's phone. Follow
the gas supplier's instructions.

• If you cannot reach your gas sup-
plier, call the fire department.

Use only your hand to push in or turn

the gas control knob. Never use tools.
If the knob will not push in or turn

by hand, don't try to repair it, call u
qualified service technician or gas
supplier. Force or attempted repair
may result in a fire or explosion.

Do not use this appliance if any part
has been under water. Immediately

call a qualified service technician to
inspect the appliance and to replace
any part of the control system and
any gas control which has been un-

der water.

Continued

i_331 11

BLUE FLAME NATURAL GAS HEATER

OPERATING
HEATER

LIGHTING

INSTRUCTIONS

1. STOP! Read the safety information,
page 11, column 3.

2. Make sure manual shutoff valve is
fully open.

3. Turn control knob clockwise
to the OFF position.

4. Wait five (5) minutes to dear out any
gas. Then smell for gas, including

near the floor. If you smell gas,
STOP! Follow "B" in the safety in-

formation, page 11, column 3. If you
don't smell gas, go to the next step.

5. Turn control knob counterclockwise

to the PILOT position.

Press in control knob for five (5) sec-

ands (see Figure 16).

Note: You may be running this

heater for the first time after hook-

ing up to gas supply. If so, the con-

trol knob may need to be pressed in
for 30 seconds. This will allow air to

bleed from the gas system.

• If control knob does not pop up
when released, contact a qualified

service person or gas supplier for
repairs.

6. With control knob pressed in, push
down and release ignitor button. This
will light pilot. The pilot is attached

to the front of burner. The pilot can
be seen through the glass panel. If
needed, keep pressing ignitor button
until pilot lights.

Note: If pilot does not stay lit, refer

to Troubleshooting, pages 14 through

16. Also contact a qualified service
person or gas supplier for repairs.
Until repairs are made, light pilot
with match. To light pilot with match,

see Manual Lighting Procedure.

7. Keep control knob pressed in for 30
seconds after lighting pilot. After 30
seconds, release control knob.

Note: If pilot goes out, repeat steps
3 through 7. This heater has a safety

interlock system. Wait one (1) minute
before lighting pilot again.

/

8. Turn control knob counterclockwise
to desired heating level. The

main burner should light. Set control
knob to any heat level between HI

and LO.

just heating levels by using the

I _k CAUTION: Do not try to ad-

manual shutoff valve.

Ignitor Button ControlKnob

Figure 16 - Control Knob In The OFF
Position

Therm°c°_Pl_//_ OrElo_irl°_Bumer

Figure 17- Pilot

TOTURN OFF GAS

TO APPLIANCE

Shutting Off Heater

1. Turn control knob clockwise
to the OFF position.

2. Turn off all electric power to the ap-

pliance if service is to be performed.

Shutting Off Burner Only (pilot
stays lit)

Turn control knob clockwise _ to
the PILOT position.

I THERMOSTAT 1

CONTROL OPERATION

The thermostatic control used on these

models differs from standard thermo-

stats. Standard thermostats simply turn
on and off the burner. The thermostat

used on this heater senses the room tern-
perature. The thermostat adjusts the

amount of gas flow to the burner. This
increases or decreases the burner flame

height. At times the room may exceed the
set temperature. If so, the burner will

shut off. The burner will cycle back on
when room temperature drops below the

set temperature. The control knob can be
set to any heat level between HI and LO.

Note: The thermostat sensing bulb mea-

sures the temperature of air near the

heater cabinet. This may not always agree
with room temperature (depending on

housing construction, installation loca-
tion, room size, open air temperatures,

etc.). Frequent use of your heater will let
you determine your own comfort levels.

I MANUAL LIGHTING I

PROCEDURE

1. Remove front panel (see Figure 7,
page 8).

2. Follow steps 1 through 5 under Light-

ing Instructions.

With control knob pressed in, strike
match. Hold match to pilot until pi-
lot lights.

4. Keep control knob pressed in for 30
seconds after lighting pilot. After 30
seconds, release control knob.

5. Replace front panel.

12 104331

OWNER'S MANUAL

INSPECTING
BURNER

Check pilot flame pattern and burner flame
patternoften.

PILOT FLAME PATTERN

Figure 18 shows a correct pilot flame pat-

urn. Figure 19 shows an incorrect pilot

flame pattern. The incorrect pilot flame is
not touching the thermocouple. This will
cause the thermocouple to cool. When the

thermocouple cools, the heater will shut
down.

If pilot flame pattern is incorrect, as shown
in Figure 19.

• turn heater off (see To Turn OffGas to

Appliance, page 12).

• seeTroubleshooting, pagesl4throughl6.

Pilot Burner

BURNER FLAME PATrERN

Figure 20 shows a correct burner flame
pattern. Figure 21 shows an incorrect burner
flame pattern. The incorrect burner flame

pattern shows yellow tipping of the flame. It
also shows the flame higher than 1/2 the

glass panel height.

WARNING: If yellow tipping

occurs, your heater could pro-
duce increased levels of carbon

monoxide. If burner flame pat-
tern shows yellow tipping, follow

instructions at bottom of this
page.

NOTICE: Do not mistake orange
flames with yellow tipping. Dirt
or other fine particles enter the
heater and burn causing brief
patches of orange flame.

If burner flame pattern is incorrect, as shown
in Figure 21

• turn heater off(see To Turn OffGas to
Appliance, page 12).

• seeTroubleshooting, pages 14through 16.

CLEANING AND

MAINTENANCE

• 1=WARNING: Tum off heater
and let cool before cleaning.

CAUTION: You must keep

control areas, burner, and circu-

lating air passageways of heater

clean. Inspect these areas of
heater before each use. Have

heater inspected yearly by aqualb
fled service person.Heater may

need more frequent cleaning due

to excessive lint from carpeting,

bedding material, etc.

ODS/PILOT AND BURNER

• Use a vacuum cleaner, pressurized air,
or small, soft bristled brush to clean.

CABINET

Air Passageways

• Use a vacuum cleaner or pressurized air
to clean.

Figure 18- Correct Pilot Flame Pattern

Thermocouple Pilot Burner

Figure 19 - Incorrect Pilot Flame Pattern

_,,.=,,_ soap and water mixture. Wipe the cabi-

CORRECT FLAME PATTERN

AT HIGH POSITION

Figure 20- Correct Burner Flame Pattern

Yellow

INCORRECT FLAME PAI"rERN

AT HIGH POSmON

Figure 21 -Incorrect Burner Flame Pattern

• Use a soft cloth dampened with a mild

Exterior

net to remove dust.

lo,_331 13

BLUE FLAME NATURAL GAS HEATER

TROUBLESHOOTING

Noto:AIl troubleshooting items arelisted in
order of operation.

OBSERVED PROBLEM POSSIBLE CAUSE REMEDY

When ignitor button is pressed, there is no
spark at ODS/pilot

When ignitor button is pressed, there is
spark at ODS/pilot but no ignition

_, WARNING: Turn off and un-

plug heater and let cool before
serv|clng. Only a qualified ser-

vice person should servlca and

repair heater.

1. Ignitorelectrode positioned wrong

2. Ignitorelectrode broken

3. Ignitor electrode not connected to igni-
tor cable

4. Ignitor cable pinched or wet

5. Piezo ignitor nut is loose

6. Broken ignitor cable

7. Bad piezo ignitor

1. Gas supply turned offor manual shutoff

valve closed

2. Control knob not in PILOT position

3. Control knob not pressed in while in
PILOT position

4. Air in gas lines when installed

5. ODS/pilot is clogged

6. Gas regulator setting is not correct

A CAUTION: Never use s wire, I

needle, or similar object to clean
ODS/pllot.This can damage ODS/
pilot unit.

1. Replace ignitor

2. Replace ignitor

3. Reconnect ignitor cable

4. Free ignitor cable if pinched by any
metal or tubing. Keep ignitor cable dry

5. Tighten nut holding piezo ignitor to
heater cabinet. Nut is located inside

heater cabinet at top

6. Replace ignitor cable

7. Replace piezo ignitor

1. Turn on gas supply or open manual
shutoff valve

2. Turn control knob to PILOT position

3. Press in control knob while in PILOT

position

4. Continue holding down control knob.
Repeat igniting operation until air is

removed

5. Clean ODS/pilot (see Cleaning and
Maintenance, page 13) or replace ODS/
pilot assembly

6. Replace gas regulator

I

ODS/pilot lights but flame goes out when

control knob is released

1. Control knob not fully pressed in

2. Control knob not pressed in long enough

3. Safety interlock system has been trig-
gered Cl'hermostat models only)

4. Manual shutoff valve not fully open

5. Thermocouple connection loose at con-
trol valve

6. Pilot flame not touching thermocouple,
which allows thermocouple to cool,
causing pilot flame to go out. This prob-
lem could he caused by one or both of
the following:
A) Low gas pressure
B) Dirty or partially clogged ODS/pilot

7. Thermocouple damaged

8. Control valve damaged

14 to_331

1. Press in control knob fully

2. After ODS/pilot lights, keep control
knob pressed in 30 seconds

3. Wait one (1) minute for safety interlock
system toreset. Repeat ignition operation

4. Fully open manual shut-offvalve

5. Hand tighten until snug, then tighten 1/4
turn more

6. A) Contact local natural gas company
B) Clean ODS/pilot (see Cleaning and
Maintenance, page 13) or replace ODS/
pilot assembly

7. Replace thermocouple

8. Replace control valve

OWNER'S MANUAL

TROUBLESHOOTING

Continued

OBSERVED PROBLEM POSSIBLE CAUSE REMEDY

Burner does not light after ODS/pilot is lit I. Burnerorifice is clogged 1. Clean burner (see Cleaning and Mainte-

nance, page 13) or replace burner orifice

2. Burner orifice diameter is too small 2. Replacebumerorifiee

3. Inlet gas pressure is too low 3. Contact local natural gas company

Delayed ignition of burner 1. Manifold pressure is too low 1. Contact local natural gas company

2. Burner orifice is clogged 2. Clean burner(see Cleaning and Mainte-
nance, page 13) or replace burner orifice

Burner backfiring during combustion 1. Burner orifice is clogged or damaged 1. Clean burner (see Cleaning and Mainte-

nance, page 13)or replace burner orifice

2. Burner damaged 2. Replace burner

3. Gas regulator defective 3. Replace gas regulator

Yellow flame during burner combustion 1. Not enough air 1. Check burner for dirt and debris. If

found, clean burner (see Cleaning and
Maintenance, page 13)

2. Gas regulator defective 2. Replace gas regulator

Slighismokeorodorduringinitialoperation 1. Residues frommanufacturing processes 1. Problem will stop after a few hours of

Heater produces a whistling noise when 1. Turning control knob to HI position 1. Turn control knob to LO position and
burner is lit when burner is cold let warm up for a minute

2. Air in gas line 2. Operate burner until air is removed from

3. Air passageways on heater blocked

4. Dirty or partially clogged burner orifice

operation

line. Have gas line checked by local
natural gas company

3. Observe minimum installation clear-
ances (see Figure 4, page 7)

4. Clean burner(see Cleaning andMainte-
nance, page 13)or replace burner orifice

Io433T 15

Continued

BLUE FLAME NATURAL GAS HEATER

TROUBLESHOOTING

Continued

A WARNING: If you smell gas

• Shut off gas supply.

• Do not try to light any appliance.

• Do not touch any electrical switch; do not use any phone in your

building.

• Immediately call your gas supplier from a neighbor's phone. Fonowthe

gas suppller's instructions.

• If you cannot reach your gas supplier, call the fire department.

IMPORTANT: Operatingheaterwhere impurities in air existmaycreateodors.Cleaning

supplies,paint,paintremover,cigarettesmoke,cementsandglues,new carpetortextiles,

etc., create fumes. These fumes may mix with combustion airand create odors.

OBSERVED PROBLEM POSSIBLE CAUSE REMEDY

Heater produces a clicking/ticking noise 1. Metal expanding while heating or con- 1. This is common with most heaters. If

just after burner is lit or shutoff tracting while cooling noise is excessive, contact qualified ser-

vice person

Heater produces unwanted odors 1. Heater burning vapors from paint, hair |. Ventilate room. Stop using odor causing

spray, glues, etc. (see IMPORTANT products while heater is running
statement above)

2. Gas leak. See Warning statement at 2. Locate and correct all leaks (see Check-

top of page ingGasConnections,page11)

Heatershutsoffinuse(ODSoperates) 1. Not enough fresh air is available 1. Open window and/or door for ventilation

2. Low line pressure 2. Contact local propaneJLP gas company

3. ODS/pilot is partially clogged 3. Clean ODS/pilot (see Cleaning and
Maintenance, page 13)

Gas odor even when control knob is in OFF 1. Gas leak. See Warning statement at 1. Locate and correct all leaks (see Check-

position top of page ing Gas Connections, page 11)

2. Control valve defective 2. Replace control valve

Gas odor during combustion 1. Foreign matter between control valve 1. Take apart gas tubing and remove for-

and burner eign matter

2. Gasleak.SeeWerningstatementat 2. Locate and correct all leaks (see Check-

top of page ing Gas Connections, page 11)

Moisture/condensation noticed on windows 1. Not enough combustion/ventilation air 1. Refer to Air for Combustion and Venti-

lation requirements (page 4)

OWNER'S MANUAL

SPECIFICATIONS

CGN20TB/CGN20TLB
20,000 Btu/Hr Models

Btu (Variable)
Type Gas

Ignition

Pressure Regulator Setting
Inlet Gas Pressure (in. of water)

Maximum 10.5"
Minimum 5"

Dimensions, Inches (H x W x D)

Heater 23.5 x 18.5 x 8.0
Carton 25.8 x21.3 x I0.I

Weight (pounds)

Heater 22
Shipping 27

10,000/20,000

Natural Only

Piezo

3"W.C.

TECHNICAL
SERVICE

You may have further questions about in-
stallation, operation, or troubleshooting.

If so, contact DESA International's Techni-
cal Service Department at 1-800-323-5190.

SERVICE

PUBLICATIONS

You can purchase a service manual from the
address listed on the back page ofthismanual.
Send a check for $5.00 payable to DESA

International.

CGN30TB/CGN30TLB
30,000 Btu/Hr Models

15,000/30,000

Natural Only

Piezo

3" W.C.

10.5"

5"

.... re_ferral_inform_ation.......

23.5x25.9x8.0-

25.8x28.7x10.1

30
35

SERVICE HINTS

When Gas Pressure Is Too Low

• pilot will not stay lit

• burner will have delayed ignition

• heater will not produce specified heat

When Gas Quality Is Bad

• pilot will not stay lit

• burner will produce flames and soot

• heater will backfire when lit

You may feel your gas pressure is too low or
gas quality is bad. If so, contact your local
natural gas supplier.

REPLACEMENT
PARTS

Note:Use only original replacement parts.

This will protect your warranty coverage
for partsreplaced under warranty.

Parts Under Warranty

Contactauthorizeddealers of this product If
theycan'tsupplyoriginal replacement part(s),

eithercontactyournearestPartsCentral (page

19) or call DESA International's Technical

Service Department at 1-800-323-5190 for

When calling DESA International, have
ready

your nalne

your address

model numberof your heater
how heater was malfunctioning
typeof gas used(lxopa_/LP ornaturalgas)
purchase date

Usually, we will ask you to return the defec-
tive part to the factory.

Parts Not Under Warranty

Contact authorized dealers of this product.
If they can't supply original replacement

part(s), either contact your nearest Parts
Central (page 19) or call DESA
International's Parts Department at 1-800-

972-7879 for referral information.

When calling DESA International, have
ready:

• model number of your heater

• the replacement part number

Io4331 17

BLUE FLAME NATURAL GAS HEATER

ACCESSORIES

Purchase these heateraccessories fromyour

local dealer. If they can not supply these
accessories, eithercontact yournearest Parts
Central (see page 19) or call DESA
International's Parts Department at 1-800-

972-7879 for referralinformation. You can
also write to the address listed on the back

page of this manual.

MANUAL SHUTOFF VALVE -

FAN KITS - GA3100A AND
GA3200TA

For all models. Provides batter heat distri-
bution. Makes heater more efficient. Coln-

plete installation and operating instructions
included.

Manuallycontrolled-GA3100A. Includes
ONIOFF switch.

FLOOR MOUNTING STAND

20,000 Btu/Hr Models
CGN20TLB - GA4500L - Ivory

CGN20TB - GA4500 -

Champagne
30,000 Btu/l-lr Models

CGN30TLB - GA4510L - Ivory
CGN30TB - GA4510 -

Champagne

For locating heater on the floor, away from

a wall. Complete installation instructions

included.

GA5010

For all models. Manual shutoff valve with

1/8" NFI" tap.

Thermostatically controlled - GA3200TA.
Includes three settings: ON/OFF/AUTO.

18 _o,_

OWNER'S MANUAL

PARTS CENTRALS

Baltimore Electric

1348 Dixwell Avenue

Hamden, CT 06514

1-800-397-7553

203-248-7553
PartsDepartment

Portable Heater Parts

342 N. CountyRd.400 East
Valparaiso,IN 46383

All States
219-462-7441

1-800-362-6951

FBD

P.O. Box 1096
1720 Kummer Road

Franklin, KY 42134

502-586-1922

1-800-654-8534

Four Flags Power Products

1115 Stateline Road

Niles, MI 49120

616-684-2697

1-800-268-4983

These Parts Centrals are privately owned businesses. They have agreed to support Our
customer's needs by providing original replacement parts and accessories. ':

Master Service Center

1184 Wilson NW

Walker, M149504
616-791-4760

1-800-446-1446

Washer Equipment Co.

1715 Main Street

Kansas City, MO 64108

KS, MO, AR

816-842-3911

East Coast Energy Products

833 Broadway

W. Long Branch, NJ 07764
908-870-8809

1-800-755-8809

Tarantin Tank Co.

P.O. Box 6129
Freehold, NJ 07728

908-780-9340

1-800-922-0724

Albany Ladder

1586.90 Central Avenue

Albany, NY 12205
NY, MA, VT
518-869-5335

1-800-354-7368

Dayton Hardware

P.O. Box 275

North Dayton Station
Dayton, OH 45404

All States
513-258-3721

OH 1-800-762-3426

Halco Enterprises

208 Carter Drive, Unit 21
WesI Chester, PA I93_2-
215-696-2670

1-800-368-0803

LA Porte's Parts & Service

2444 N. 5th Street
HartsviUe, SC 29550

803-332-0191

Parts Department

Cans Unlimited, Inc.

P.O. Box 645
Taylor, SC 29687

All States

803-879-3009

1-800-845-5301

w4331 19

BLUE FLAME NATURAL GAS

ILLUSTRATED

HEATER

PARTS
BREAKDOWN

CGN20TB
CGN20TLB
CGN30TB
CGN30TLB

21

\

2O

4

15

\

J

7

20 _o4331

OWNER'S MANUAL

PARTS LIST

CGN20TB
CGN20TLB
CGN30TB
CGN30TLB

KEY
NO.

I

2

3
4

5
6

7

8
9
10

11

11-1

11-2
12
13
14

15
16
17

18
19
20
21

22
23
24

This list contains replaceable parts used in your heater. When ordering parts, follow the insf-u_cfions

listed under Replacement Parts on page 17 of this manual.

PART NUMBER FOR

CGN20TB/CGN20TLB CGN30TB/CGN3OTLB
20f000 Btldl-lr 30_000 Btu/Hr

098304-01
098742-03
098742-19

103476-01
101108-01

104189-01AA

098260-09
M11084-26

104618-01BR
098271-03
098249-01
099440-05

098514-01
098594-01

103446-01
099387-03

103845-06
099066-01

099415-07
099553-01

103255-01

103256-01

098522-10

104617-03

104617-05

997159-04

M11084-38

NJF-8C

098304-01
098742-04

098742-20

103476-02
101108-01

104189-02AA
098260-10
M11084-26

104618-02BR
098271-03
098249-01

099440-05
098514-01
098594-01

103447-01
099387-03

103845-08
099066-01
099415-11
099553-01

103255-01

103256-01
098522-12

104617-04

104617-O6

097159-04

Ml1084-38

NJF-8C

DESCRIPTION

Screw, #10 x 3/8"

FrontPanel for CGN20TB/CGN30TB (Champagnel
Front Panel for CGN2OTLB/CGN30T!.B (Ivo_)

Grill Guard

Removable Speed Clip
Bottom Glass Retainer

Glass Panel

i Screw, #10 x3/8"

Deflector Unit
IgnitorCable

Nut, M5

ODS/Pilot Assembly

Thermocouple

Ignitor Electrode
Burner

3/16" PilotTubing

Injector
Mounting Bracket

Pressure Regulator
Pilot Shield

3/8" Outlet (Bumer) Tubing
3/8" Inlet Tubing

Thermostat Gas Valve
Cabinet for CGN20TB/CGN30TB (Woodgrain)

Cabinet for CGN20TLB/CGN30TLB (Ivory)

Piezo Ignitor

Screw, #8 x 3/8"

Hex Nut

QTY.

2

1

7-

1

2

1
1

4

1
1

2

1
1
1
1
1
1

1
1
1

1

1

1
1

1
1
2
1

PARTS AVAILABLE -- NOT SHOWN

098305-01 098305-01 Control Position Label (CGN20TB/CGN30TB 1

098305-05 098305-05 Control Position Label (CGN20TLB/CGN30TLB 1

100642-01 100642-01 Hardware Assembly 1

_o_3_ 21

Champagne)

Ivory)

BLUE FLAME NATURAL GAS HEATER

NOTES

NOTES

, i

OWNER'S MANUAL

lo,r33_ 23

WARRANTY INFORMATION

KEEP THIS WARRANTY

Model

Serial No.

Date Pumhased

Always specify model and serial numbers when communicatingwith the factory.
We reserve theright to amend these specifications at any time without notice. The only warrantyapplicable is our standard written

warranty. We make no other warranty, expressed or implied.

LIMITED WARRANTY

COMFORT GLOW VENT-FREE NATURAL GAS HEATERS

DESA International warrants this product tobe freefrom defects in meterials and components for two(2)yearsfrom the date
of firstpurchase, providedthat the producthas been properlyinstalled, operatedandmaintained in accordance with all applicable

instructions. To make aclaim under this warranty the Bill of Sale or cancelled check must be presented.
This warranty is extended only to the original retail purchaser. This warranty covers the cost of part(s) required m restore this

heater to proper operating condition andan allowance for labor when provided by aDESA Authorized Service Center. Warranty

)art(s) MUST be obtained through authorized dealers of this product and/or DESA International who will provide original

factory replacement parts. Failure to use original factory replacement parts voids this warranty. The heater MUST be installed

by a qualified installer in accordance with all local codes and instructions furnished with the unit.
Tiffs warrantydoes not apply topartsthat are not in original condition because of normalwearand tear,orparts that fail orbecome

damaged as a result of misuse, accidents, lack of proper maintenance or defects caused by improper installation. Travel,
diagnostic cost, labor, transportation and any and all such other costs rela_d to repairing a defective heater will be the

responsibility of the owner.

TO THE FULL EXTENT ALLOWED BY THE LAW OF THE JURISDICTION THAT GOVERNS THE SALE OF THE
PRODUCT; THIS EXPRESS WARRANTY EXCLUDES ANY AND ALL OTHER EXPRESSED WARRANTIES AND

LIMITS THE DURATION OF ANY AND ALL IMPLIED WARRANTIES, INCLUDING WARRANTIES OF MER-
CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE TO TWO (2) YEARS FROM THE DATE OF FIRST

PURCHASE; AND DESA INTERNATIONAL'S LIABILITY IS HEREBY LIMITED TO THE PURCHASE PRICE OF THE
PRODUCT AND DESA INTERNATIONAL SHALL NOT BE LIABLE FOR ANY OTHER DAMAGES WHATSOEVER

INCLUDING INDIRECT, INCIDENTAL OR CONSEQUENTIAL DAMAGES.
Some states do not allow a limitation on how long an implied warrantylasts or an exclusion or limitation of incidental or

consequential damages, so the above limitation on impfied warranties, or exclusion or limitation on damages may not apply to you.

This warranty gives you specific legal rights, and you may also have other rights that vary from state to state.

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INTERNATIONAL

2701 Industrial Drive

P.O. Box 90004
Bowling Green, KY 42102-9004

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104331 01

NOT A UPC

104331-01
REV. A
02/98